Henry Big Boy Underlever .44 magnum disassembly

The purpose of my videos is to provide information to SGC and FAC shooters which is otherwise difficult to find in the UK market. The information I share is intended to inform and support members of our community to research certain products and encourage good maintenance practices to ensure safety and longevity for their firearms.
How to disassemble your Henry Big Boy Underlever .44 magnum.

[@Stormvetprime01]

Man alive, here's me (a yank) learning how to work on my new rifle from a bloody redcoat! AHHH the irony. Okay enough revolutionary war jokes... You are correct on the dissimilar metals conjunction, as an aircraft mechanic in the Army we were taught about that. Basically - as it was explained to me - different metals have varying capacitance (electrical charge holding, sort-of). Depending on the ambient static charge (free electrons are everywhere) those "voltages" travel to-and-fro which can prompt an oxidation to occur, sort of like a short-out or burn. Well guess what rust is - oxidized metal. So that's what causes dissimilar metals corrosions. In the aircraft arena we used zinc chromate to help protect.

[@jabbott376]

Happy to be of service! Thanks for the explanation as well. Good to know I'm not going completely mad 😅.

[@dylancavill1921]

Just bought one of these. will be saving this for strip and rebuild. thanks!

[@terryhawley202]

Thank you for a very clear and precise video. Nice job!

[@mentorofarisia371]

Excellent! Very thorough. The Henry manual that comes with gun has almost nothing - only vaguely cleaning the barrel.

[@xjetpilot]

Thank you for making this video, very helpful! Cheers

[@chardon59803]

Good stuff here, great tips.

[@kentlyone]

Excellent video, thanks

[@justsomeguy3931]

Great info, thanks for sharing

[@jadenantal1652]

Thanks for the vid

[@jonhatch3398]

How would it do against black Bear or Grizzle

[@KGiustOD]

Nice video. Is the barrel threaded into the receiver or is it a press fit?

[@jabbott376]

Not sure, sorry. Unless it's something simple, like a .22 AR barrel, I leave big stuff to a gunsmith.

[@whitneydylan1]

Came here to see how hard it would be to change the mag tube... but cant find a replacement online... do you know where i would be able to buy one?

[@jabbott376]

If you're in the UK, Marlinspares might carry Henry parts but I'm not sure, sorry!

[@midnight51]

I have a big boy x 44. Is it necessary to field strip the entire rifle to clean it?

[@jabbott376]

Depends how deeply you want to clean. I'm not sure how different the X is but for a standard big boy, if you just wanted to wipe the receiver and clean the bolt and barrel, you can remove the lever and slide the bolt out the back. Watch out for the ejector as that is only held in place by the bolt.

[@Liinglingg]

most firearms don’t even need deep clean until thousands of rounds and if anything mainly just the barrels need a clean, I just got the x model 45-70 packs a punch

[@mkshffr4936]

​@@Liinglingg Unless of course you are shooting black powder.

[@austinpotulny401]

Anyone know how to remove the barrel out of the receiver? Will explain if someone is curious

[@ice6911]

Can i take off the handguard without having to disassemble the rest of the gun?

[@jabbott376]

Yes, you can. Remove the magazine tube (not the housing). Remove the barrel band, which you should be able to angle over the front sight with the magazine tube removed - are you can leave it hanging. Then push the handguard forward and it should slide off.